<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" usePreloader="false">

package com.haso.flex4SH.component
{   import flash.display.Sprite;   import flash.events.Event;   import flash.events.ProgressEvent;   import mx.events.FlexEvent;   import mx.preloaders.DownloadProgressBar;   public class pbarunsee extends DownloadProgressBar   {   public function pbarunsee()   {   super();   }   override public function set preloader( preloader:Sprite ):void    {   preloader.addEventListener( ProgressEvent.PROGRESS , SWFDownloadProgress );            preloader.addEventListener( Event.COMPLETE , SWFDownloadComplete );    preloader.addEventListener( FlexEvent.INIT_PROGRESS , FlexInitProgress );    preloader.addEventListener( FlexEvent.INIT_COMPLETE , FlexInitComplete );    }   private function SWFDownloadProgress( event:ProgressEvent ):void {    this.visible=false;   }    private function SWFDownloadComplete( event:Event ):void {this.visible=false;}    private function FlexInitProgress( event:Event ):void {    this.visible=false;   }    private function FlexInitComplete( event:Event ):void       {                dispatchEvent(new Event(Event.COMPLETE));    }    }
}

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"    xmlns:s="library://ns.adobe.com/flex/spark"    xmlns:mx="library://ns.adobe.com/flex/mx"    minWidth="955" minHeight="600"  preloader="com.haso.flex4SH.component.pbarunsee">